SOLUTION: A class consist of 8men & 7ladies,2students were selected randomly to represent the class in a debate. find the probability that the 2students selected are(A)Both ladies(B)Both men

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Question 1009004: A class consist of 8men & 7ladies,2students were selected randomly to represent the class in a debate. find the probability that the 2students selected are(A)Both ladies(B)Both men(C)of the same sex(D)of different sex.
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A class consists of 8men & 7ladies.
2students were selected randomly to represent the class in a debate.
Find the probability that the 2 students selected are
(A)Both ladies:: 7C2/15C2
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(B)Both men:: 8C2/15C2
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(C)of the same sex:: [7C2+8C2]/15C2
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(D)of different sex.
There are 8*7 = 56 possible different sex pairs
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P(different sex pairs) = 56/15C2
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Cheers,
Stan H.
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